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/**
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* This file is part of the LDP4j Project:
* http://www.ldp4j.org/
*
* Center for Open Middleware
* http://www.centeropenmiddleware.com/
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Copyright (C) 2014-2016 Center for Open Middleware.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Artifact : org.ldp4j.framework:ldp4j-application-api:0.2.1
* Bundle : ldp4j-application-api-0.2.1.jar
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
*/
package org.ldp4j.application.data;
import java.io.Serializable;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import javax.xml.namespace.QName;
import org.ldp4j.application.vocabulary.Term;
import com.google.common.collect.ImmutableMap;
public final class NamingScheme {
public enum NameType {
TERM(Term.class),
URI(URI.class),
QNAME(QName.class),
STRING(String.class),
NUMBER(Number.class),
SERIALIZABLE(Serializable.class),
;
private final Class clazz;
private NameType(Class clazz) {
this.clazz = clazz;
}
private static NameType valueOf(Object t) {
for(NameType candidate:values()) {
if(candidate.clazz.isInstance(t)) {
return candidate;
}
}
throw new IllegalArgumentException("Invalid name type '"+t.getClass().getCanonicalName()+"'");
}
@Override
public String toString() {
return clazz.getCanonicalName();
}
}
private enum NamingStrategy {
LOCAL,
GLOBAL,
;
}
private interface NameFactory {
Name create(T id);
}
private static final class GlobalNameFactory implements NameFactory {
@Override
public Name create(T id) {
return ImmutableName.newGlobalName(id);
}
}
private static final class LocalNameFactory implements NameFactory {
@Override
public Name create(T id) {
return ImmutableName.newLocalName(id);
}
}
public static final class NamingSchemeBuilder {
private Map configuration=new HashMap();
private void addMappings(NamingStrategy strategy, NameType type, NameType... rest) {
this.configuration.put(type, strategy);
for(NameType r:rest) {
this.configuration.put(r, strategy);
}
}
public NamingSchemeBuilder withLocal(NameType type, NameType... rest) {
addMappings(NamingStrategy.LOCAL, type, rest);
return this;
}
public NamingSchemeBuilder withGlobal(NameType type, NameType... rest) {
addMappings(NamingStrategy.GLOBAL, type, rest);
return this;
}
public NamingScheme build() {
return new NamingScheme(this.configuration);
}
}
private static final Map FACTORIES=
ImmutableMap.
builder().
put(NamingStrategy.GLOBAL, new GlobalNameFactory()).
put(NamingStrategy.LOCAL, new LocalNameFactory()).
build();
private final Map configuration;
private NamingScheme(Map configuration) {
this.configuration = configuration;
}
private NameFactory getFactory(NameType type) {
NamingStrategy namingStrategy = configuration.get(type);
if(namingStrategy==null) {
namingStrategy=NamingStrategy.GLOBAL;
}
return FACTORIES.get(namingStrategy);
}
private static void append(StringBuilder builder, String part) {
if (part != null && !part.isEmpty()) {
if (builder.length() > 0) {
builder.append('.');
}
builder.append(part);
}
}
private static String assemble(String name, String... names) {
StringBuilder builder=new StringBuilder();
append(builder,name);
if(names!=null) {
for(String s:names) {
append(builder,s);
}
}
return builder.toString();
}
private Name createName(T id) {
return getFactory(NameType.valueOf(id)).create(id);
}
public Name name(URI id) {
return createName(id);
}
public Name name(QName id) {
return createName(id);
}
public Name name(Term id) {
return createName(id);
}
/**
* Concatenates elements to form a dotted name, discarding null values
* and empty strings.
*
* @param name
* the first element of the name
* @param names
* the remaining elements of the name
* @return {@code name} and {@code names} concatenated by periods
*/
public Name name(String name, String... names) {
return createName(assemble(name, names));
}
/**
* Concatenates a canonical class name and elements to form a dotted name, discarding any null values or empty strings
* any null values or empty strings.
*
* @param clazz
* the first element of the name
* @param names
* the remaining elements of the name
* @return {@code clazz} and {@code names} concatenated by periods
*/
public Name name(Class clazz, String... names) {
return name(clazz.getCanonicalName(), names);
}
public Name name(T id) {
return createName(id);
}
public Name name(T id) {
return createName(id);
}
public static NamingSchemeBuilder builder() {
return new NamingSchemeBuilder();
}
public static NamingScheme getDefault() {
return builder().build();
}
}
